Meet Our Medical College of Wisconsin Gastroenterology and Hepatology Teams
Faculty
Reza Shaker, MD
Assoc Provost, Sr Assoc Dean, Ctr Dir, Chief, Prof
Dilpesh S. Agrawal, MD, MRCP
Assistant Professor
Helmut Ammon, MD
Professor
Gokulakrishnan Balasubramanian, MD
Associate Professor
Poonam Beniwal-Patel, MD
Associate Professor
William L. Berger, MD
Associate Professor
Phillip Chisholm, MD
Assistant Professor
Francis Edeani, MD
Assistant Professor
Jose Franco, MD
Senior Associate Dean; Professor of Medicine
Ivan M. Lang, PhD, DVM
Professor
Veronica Loy, DO
Associate Professor
Srivats Madhavan, MD
Assistant Professor
Benson T. Massey, MD
Professor
Bidyut K. Medda, PhD
Associate Professor
Ling Mei, MD
Associate Professor
James B. Nelson, MD
Adjunct Assistant Professor
Matthew T. Peller, MD
Assistant Professor
Kia Saeian, MD, MSc EPI
Professor
Patrick Sanvanson, MD
Associate Professor of Medicine
Preetika Sinh, MD
Associate Professor
Zachary Smith, DO, MSc
Associate Professor
W. Harley Sobin, MD
Adjunct Assistant Professor
Achuthan Sourianarayanane, MD, MRCP, FOMA
Associate Professor
Daniel J. Stein, MD
Director, Associate Professor
Phaedra Tachtatzis, MD, MRCP, MBChB
Associate Professor
Juan Pablo Trivella, MD
Assistant Professor
Hassaan Zia, MD
Assistant Professor
Physician Assistants & Nurse Practitioners
Kenneth Christensen, PA-C
Physician Assistant
Sara L. Duthie, DNP, APNP, FNP-BC
APP Outpatient
Andrea Fetherston, APNP, MSN
APP Outpatient
Casey J. Fisher, BSN, MSN, APNP
APP Outpatient
Kristin M. Granlund, PA-C
Physician Assistant
Kathryn Johnson, MPAS, PA-C
APP Outpatient
Lauren Hunt, MPAS, PA-C
APP Outpatient
Corinne Lange, APNP, FNP-C
Nurse Practitioner
Pamela Papenfuss, APNP, MSN, FNP
APP Outpatient
Scott D. Ramirez, DNP, APNP, NP-C
Nurse Practitioner
Bryanne M. Sekeres, MSN, FNP-BC, APNP
APP Outpatient
Margo R. Gengler, PA-C
APP Outpatient
Miranda Waraxa, APNP, MSN
APP Outpatient
Community-Based Physicians & Advanced Practice Providers
Cristino C. Canga, MD
Staff Physician
Peter Eichenseer, MD
Staff Physician
Raman Khanna, MD
Staff Physician
Syed H. Mehdi, MD
Staff Physician
Madhuri H. Trivedi, MD
Staff Physician
Denine E. Murn, PA-C, MPAS
APP Outpatient
Emily Bartel, APNP
Nurse Practitioner
Lynn M. Giovetti, PA-C
APP Hybrid
Sara E. Glapa, APNP, MSN, BS
APP Inpatient 1
Michael J. Kosnik, PA-C
APP Outpatient
Kaitlin A. Meier, APNP, DNP
APP Outpatient
